Roller straightening machine



Jan. 9, A, wlRTH 1,943,153

ROLLER STRAIGHTENING MACHINE Filed July 6, 1931 3 Sheets-Sheet l Jan. 9, 1934- w R 1,943,153

ROLLER STRAIGHTENING MACHINE Filed July 6, 1931 3 Sheets-Sheet 2 Jan. 9, A W|RTH ROLLER STRAIGHTENING MACHINE Filed July 6, 1931 3 SheetsSheet 3 UNITED STATES ROLLER STRAIGHTENING MACHINE Alfred Wirth, Erkelenz, Rheinland, Germany Application July 6, 1931, Serial No. 549,033, and in Germany July 11, 1930 6 Claims. (Ci. 153--54) This invention relates to a roller straightening In these double thrust bearing chambers are machine of the kind in which a housing, more also provided screws 7', which, by being rotated, particularly the outer housing, is movably arcan be screwed into a threaded bore y in the end ranged for the purpose of exchanging the of each straightening roller shaft, so that the i straightening rollers and the straightening roller straightening roller shafts are thereby secured shafts. In these known roller straightening main the simplest manner when the machine is chines, one disadvantage in particular is present, in the working condition and end and radial namely that the total length of the machine in thrusts of the roller shafts are transmitted to the operative condition and its total length in the bearing chambers. This provision is also 10 the open condition are different from one anmade for the purpose of permitting convenother. A great deal of space of the available ient removal of the roller shafts as, for incooling bed surface is thereby regularly taken up. stance, to facilitate changing thereof. The

In order to remove this disadvantage, accordthrust chamber is rotatable in a bearing sleeve ing to the present invention a fundamentally difk which latter is adapted to take up radial thrust ferent course is adopted. The main idea or" the and is provided with a collar '11. cooperating With invention is to be found in the fact that the two sets of bearing balls 22 and '0' adapted to take inner housing provided between the gear box and up axial thrust. The thrust bearing is surthe outer housing is slidably arranged. In this rounded by a cylindrical casing n which is seway the total length of the roller straightening cured in the housing 0 and provided with an 20 machine is constant for all operative circumadjustable nut n for adjusting the races of the stances. bearing balls '0 and v to compensate for wear. The above-mentioned structural arrangement A further advantage in the provision of this also yields further important advantages. Thus thrust chamber and the mounting thereof in the the possibility is given of supporting the straighthousing 0 is the protection of the bearing surening roller shafts in such a Way that when the faces which, when the rollers are being changed,

inner housing is shifted they remain connected are not exposed to damage, due to the fact that with it. In order to preclude tilting moments, during this operation the thrust chamber reaccording to the invention, the straightening mains in position in the housing 0 and the roller roller shafts and the driving shafts supported in shafts are withdrawn therefrom.

30 the driving box are guided one in the other. In the displaceable inner housing 01 plain jour- Further details of the invention Will app a nal bearings k are also provided for the recepfrom the following description of aconstructional tion of the ends of the straightening roller example. shafts. With the ends of the straightening roll- The invention is illustrated in the accompanyer shafts that are lodged in the inner housing, 35 ing drawings, in which the driving shafts Z of the driving box I) are con- Figure 1 shows a roller straightening machine nected. For the sake of greater clearness in the according to the invention in section in the workdrawings only one driving shaft is shown. The

ing condition, driving shaft is slidably keyed in its driving Figure 2 shows the same machine, likewise in member Z in the driving box so as to be slidable 49 section, but in the separated condition, in an axial direction, whereby adjustment of the Figure 3 is a view of the outer housing of the inner housing d and the driving shaft Z may be machine, and effected. For the shifting of the inner housing, Figure 3a a side view of the outer housing. it is sufiicient to provide a single screw spindle m,

Upon the base a of the roller straightening mawhich is secured to the housing at and moved axchine are lodged the driving box b, the outer ially by a suitable controlling device on the outhousing 0 and the inner housing d, these being side of the driving box, for instance, aworm wheel mounted in such a way that the outer housing 0 m threaded thereon. The end 0 of the double and the driving box 22 are fixed to the base, while thrust chambers forms an abutment shoulder, the inner housing d is displaceable upon the base against which the straightening rollers g are a between the outer housing and the driving box. tightly drawn when the screws 7' are tightened, so

Figure 1 shows the straightening roller shafts that these rollers are secured in their proper e and f, with the straightening rollers g and 11., position without special auxiliary means such as which are supported in the housings c and cl. ring nuts or the like being required. As supporting means, double thrust chambers i For operating the straightening rollers there are provided in the stat nary o te housing (2,. serves a motor 10, which is located on the outside of the fixed outer housing, and which acts through clutches q, preferably operated by hand levers r,

In both housings oil chambers s are provided,

by which all the running surfaces of the straight-V ening roller shafts and of the double thrust chantbers are automatically lubricated; When the straightening roller shafts, withthe straightening rollers, are to be changed, it is onlynecessary to unscrew the screws 7' shown in Figure 1 so far that the engagement between the straightening roller shafts and the screws isreleased. The.

inner housing d can then without further dimculty be moved into the position shown in Figure 2by means'of theworm wheel m and the screw spindle m. The circumstance that the straightening roller shaft, through the driving shafts I, still remains in guiding connection with the driving box, is particularly advantageous,

since in this way the tendency of the housing d to tilt over under the weight of the straightening roller shafts, with the straightening rollers, is obviated. In the removed condition according to Figure 2,"sufiicient space is provided for running,

through the machine anymaterials that are not to be straightened between the ends of the straightening shafts. and the inner wall of the stationary outer housing 0. The re,-establish ment of the working condition is likewise effected in thesimplest manner by moving the displaceable inner housing d back to the stationary outer housing and screwing into the ends of the straightening roller shafts the assembling and releasing screws 5i located on the outer housing. Then finally theend faces of the straightening rollers are drawn against the shoulder ofthe thrustchamber, so'that the correct adjustment of the straightening rollers is ensured; without special precautions having to be taken;

What I claim is:-

1. A roller straightening machine including gearing for driving the straightening rollers, a stationary driving box carrying the whole of the driving gearing, a stationary outer housing, and an inner housing slidably mounted between the driving box and the outer housing.

2. A machine as claimed in claim 1, including straightening rollers, shafts supporting said rollers and supported partly in the outer stationary housing and partly in the slidable housing and adapted, when the latter is displaced, to move therewith and to disengage the outer stationary housing.

3., A machine as claimed in claim 1, including rollers, shafts supporting said rollers and rotatably supported. partly in the slidable housing and partly in the stationary housing, drive shafts slidably guidedin the driving box and rigidly connected with the roller supporting shafts to prevent tilting of the slidable housing when the latter is moved away from the stationary outer hous- 4. A me-chine as claimed in claim 1, including a doublethrust bearing chamber rotatably mounted, in theouter stationary housing and having an abutment shoulder thereon, aroller supporting shaft removably received in the bearing chamber, and a retaining screw rotatable in the bearing chamber and threaded in the terminal of I the roller shaft to retain the latter in the bearing,

chamber. 7

5. A machine as claimed in claim 1, including an actuating device for the slidable housing including a screw connected with said slidable-housing and passing through the box.

6. A roller straightening machine including gearing-for driving thestraightening rollers, a stationary'driving box carrying the whole of the driving gearing, an inner housing slidably mounted between the driving box and the outer housing,- a shaft journaled in the outer and inner hous ings, a driving connection between the'driving gear and said shaft, and means connecting said-v shaft and drivingmember with theinner housing 12;

whereby, when thelatter is displaced, said shaft andmember move therewith.

ALFRED WIRTH. 

